The “Rondout Examiner” directs our at tention to the importance of new improve ments in the manufacture of iron, to reduce the cost of both pig and wrought-iron. The " Examiner " has called attention to an expe rimental college for experiments to accomplish such desirable results. The plan is a good one —mdash;but, at the same time, we want to see large iron works established and conducted with spirit and enterprise with the present know ledge we now possess. It is our humble opi nion that iron can be made cheaper here at any time, in some districts at least, than it can be made either in England or Scotland. We have coal and iron lying beside one another, and the price of manual labor in making a ton of iron is not so much as some pretend. More men of capital should enter into the business and conduct it upon a large scale. We have been informed that M. G. Farmer, of Boston, whose name is so intimately associ ated with the Municipal Telegraph Alarm, has invented an improvement on Grove's Bat tery, of such a nature as will reduce the cost of working it about 50 per cent. We do not know in what the improvement consists, but give the statement for what it is worth : if it is as represented, the value of it to the com munity is incalculable. Sears C. Walker, so distinguished for his researches in practical astronomy, is no more ; he died in Cincinnati on the 30th ult. His health wasimpared for a longtime by severe mental exertion in scientific studies and re searches. We have lost one of the ablest men of science in our country. List of Patent Claims Issued from The United States Patent Office FOR THE WEEK ENDING FEBRUARY 1, 1853. CUTTING BARREL HEADS—mdash;By Chas. B. Hutchin son, of Waterloo, N. Y.: In relation to the head turning apparatus, I am aware that there is nothing novel in the use of clamp rings, as such, or of rota ting cutting tools, such as fleam knives, chamfering chisels, and face planes, set on discs or otherwise; but the peculiar combination and arrangement of all these, which I have adopted, I believe to be whol ly novel and not heretofore used, either for the pur pose specified, or any other. I claim the use of clamp rings to hold the pieces of heading, and hung in bearings on opposite sides or in any equivalent way, so as to be reversible in combination with the adjustable rotating cutters, to cut and bevel the edge of the head, and with the face cutters arranged upon the disc, as described, whereby the opposite sides of the head may be suc cessively presented to the action of the cutting tools and the head cut out, chamfered, and face dressed or cat out and chamfered only, at one operation. FRAMES FOR LANTERNS—mdash;By E. P. Parker, of Proc-torsville, Vt. : I am aware that off-sets have been turned on the frames of lanterns, for holding the glass, —c, but the corner pieces are made up of two or more pieces soldered together, this I do not claim. But I claim the turning of grooved or sunken flan ges upon the frames of lanterns, so that when the top and bottom are united, the flanges for holding the glass, mica, or their equivalents, shall be alrea dy iu place to receive them without any further sol dering, as described. SCREW WRENCH—mdash;By B. Read, of New York City : I do not claim having the jaw attached to a shank, and the shank passing through a recess in the jaw, C, independent of the mode of operating the jaws; but I claim the arrangement of the seve ral parts as described, viz., thejaw, C, bing attach ed by a pivot to the stock, and having a recess through it, through which the shank of the adjusta ble jaw, E, passe?, the shank being provided with a rack, into which a pawl attached to the end of the stoek, catches, said pawl being kept into therackby the spring, by which arrangement the two jaws, E and C, are forced against the sides of the nut as the handle of the wrench is turned, and the jaws made to bear or bind harder upon or near the corners of the nut, thus preventing the jaws from slipping around it. GAS APPARATUS—mdash;By William and Matthias Strat-ton, of Philadelphia, Pa,: We claim, the consturc-tion of the stove, removable gates in the ends, for the introduction of the retort and the movable sactioa under the rosin holder, in the manner as set forth. GLASS EURNACES—mdash;ByBenj. Shiverick, of North Sandwick, Mass.: I claim combining the long coni cal valve and the discharge tube, by means of a set-screw and nut, and supporting spring, whereby the flow of the melted roein, may not only be regulated, but when any interruption takes place, the attendant can readily remove the same, either by lifting the Taive or pressing on it, and such valve be subse quently moved back to its former position by the spring. INDIA RUBBER—mdash;By Richard Solis, of New Bruns wick, N. J. : I claim the manufacture of india rub ber fabrics by the mixture of ground or powdered vulcanized rubber, with the ordinary India rubber of commerce. VOLTAIC BATTERIES—mdash;Isaac L. Pulvermacher, of Preslaw, Prussia. Patented in Austria, Oct. 9,1849. I do not clam simply making galvanic elements of negative and positive metals with porous, non-con ducting substance interposed. What I claim is constructing ga'vanic elements of positive and negative metals separated from each other by a porous non-conducting substance, when the said porous non-conducting substance is sur rounded and held by one or both the said metals, substantially as specified. Also forming the galvanic elements by coiling, im the form of helices, the positive and negative wires in grooves, previously made in thesurface of an in ner core of wood or other porous substance, as spe cified, so that when the wires are wrapped around in the said grooves, they shall both be in contact with the porous substance within and separate from each other, as specified. Also forming a chain of a series of elements, as de scribed, by means of ties or links, for the purpose specified. finally, the method of interrupting the current of electricity by means of the spring vibrating conduc tor, interposed as described, for the purpose of break ing and closing the circuit by the movement of the human body, or other like motion, as set forth. RE-ISSUE. DISCHARGING WATER FROM VESSELS—mdash;By Neha-mlah Hodge, of North Adams, Mass. Dated Oct 19, 1852: I claim the combination of a system of two series of chambers, connecting pipes, discharging I pipe, receiving hole or orifice and ventilating pipes, as arranged, connected, applied to the hold of a na vigable vessel, and made to operate during the roll ing or pitching movements thereof, for the purpose of elevating and discharging water therefrom, asset forth.